I've just enhanced the Bru'n Water site to include a nicer and more informative web-based version of the Water Knowledge that has always been included in the Bru'n Water software. Now you can easily view some of the most comprehensive brewing water knowledge on the web without having to download Bru'n Water.
The link in my signature line gets you to Bru'n Water and the link to the Water Knowledge page.
Enjoy!